Research Papers

Evaluation of Feedback Enabled Active Colonoscopy Training Model

[+] Author and Article Information
Ravindra Kale

Research Assistant
Mechanical Engineering Department,
Ohio University,
Athens, OH 45701

David Koonce

Associate Professor
Industrial Systems Engineering Department,
Ohio University,
Athens, OH 45701

David Drozek

Assistant Professor of Surgery,
Department of Specialty Medicine,
Ohio University Heritage College of
Osteopathic Medicine,
Athens, OH 45701

JungHun Choi

Assistant Professor
Mechanical Engineering and
Biomedical Engineering Program,
Ohio University,
Athens, OH 45701

Manuscript received September 24, 2012; final manuscript received June 11, 2013; published online September 24, 2013. Assoc. Editor: Carl A. Nelson.

J. Med. Devices 7(4), 041008 (Sep 24, 2013) (7 pages) Paper No: MED-12-1116; doi: 10.1115/1.4024831 History: Received September 24, 2012; Revised June 11, 2013

The objective of this research is to evaluate the efficacy of an active colonoscopy training model (ACTM). Colonoscopy is a widely utilized procedure for diagnosing diseases of the lower gastrointestinal tract. Since colonoscopy is a difficult procedure to teach, as well as learn, simulators are often used to teach and practice the procedure. To make learning and assessing the procedural skills easy and interactive, an active training model was developed and evaluated. To measure the applied force and the time to complete the procedure, load cells and light detecting sensors were installed in the training model and were interfaced with a data acquisition system. The user interface was programmed in LabVIEW to record the force data and time taken to complete the procedure. Thirty medical students were recruited to perform a series of three colonoscopies on the ACTM. These students were instructed how to handle the equipment and perform the colonoscopy. The procedure was also performed by experienced endoscopists to establish a benchmark. The collected data were analyzed to determine the effectiveness of the device to (1) distinguish between the participants based on their level of expertise, and (2) to detect improvement in skill of the students with repetitive sessions with the device. The results of this research may be useful to show that the ACTM may be an effective tool to integrate in to the medical training program of medical studies. It can be possibly used for evaluating the skill sets, as well as practicing the procedure before a novice surgeon performs the procedure on a patient.

Copyright © 2013 by ASME
Topics: Students , Feedback
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Fig. 1

The active colonoscopy training model. In the colonoscopy platform, 10 force sensors and 24 light detecting sensors were installed. The force sensors are embedded in the body of mannequin (colonoscopy platform) and are triggered when the black rings are placed on tension. The light detecting sensors (photocells) are attached on the silicone colon for the localization of the distal tip.

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Fig. 2

Load cells installed in the colonoscopy platform [28]. The load cells were installed and embedded in the platform and interfaced with the load cell drivers connected to the data acquisition system.

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Fig. 3

LabVIEW Front Panel developed for the ACTM. User interface programmed in LabVIEW to collect and record the data. This front panel displayed the real time force values, real time warnings, and the duration of time required by the participant in a specific part of the colon.

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Fig. 4

Average forces in the parts of the colon. The figure shows the average forces recorded in the parts of the colon in three trials of the colonoscopy performed on the ACTM.

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Fig. 5

Percentage decrease in time required to advance the colonoscope through the parts of the colon during the three trials. The average time required in each part of the colon in trial 1 is considered as base and the time required in trial 2 and trial 3 is plotted as shown.




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